B:"Hello"
B:"How are you?"
A:"Thank you."
A:"Oh,Fine,thanks."
A:"Sorry,I'm afraid."
B:"Don't be afraid."
A: "Where do you come from?"
B":I'm from Germany."
B:"Have you got a sister or a brother?”
A: "No,I haven’t. "
B: "Why? "
A: "Because Chinese policy doesn’t allow. "
B: "Why? "
A: "Because there are too many people in China. "
A: "Nice to meet you. "
B: "Nice to meet you,too. "
C:Chinese boy,very good. "